53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
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#include <vanetza/geonet/gbc_memory.hpp>
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namespace vanetza
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{
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namespace geonet
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{
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void GbcMemory::capacity(std::size_t num)
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{
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m_capacity = num < 1 ? 1 : num;
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// remove excessive identifiers
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auto& by_queue_index = m_identifiers.get<by_queue>();
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while (by_queue_index.size() > m_capacity) {
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by_queue_index.pop_front();
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}
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}
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std::size_t GbcMemory::size() const
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{
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return m_identifiers.size();
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}
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bool GbcMemory::remember(const PacketIdentifier& id)
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{
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auto& by_packet_index = m_identifiers.get<by_packet>();
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auto found_packet = by_packet_index.find(id);
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if (found_packet == by_packet_index.end()) {
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// make space for one identifier
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auto& by_queue_index = m_identifiers.get<by_queue>();
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while (!by_queue_index.empty() && by_queue_index.size() >= m_capacity) {
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by_queue_index.pop_front();
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}
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by_queue_index.push_back(id);
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return false;
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} else {
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// packet is already known, just move it to end of queue
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auto found_queue = m_identifiers.project<by_queue>(found_packet);
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auto& by_queue_index = m_identifiers.get<by_queue>();
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by_queue_index.relocate(by_queue_index.end(), found_queue);
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return true;
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}
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}
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bool GbcMemory::knows(const PacketIdentifier& id) const
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{
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return m_identifiers.get<by_packet>().find(id) != m_identifiers.get<by_packet>().end();
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}
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} // namespace geonet
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} // namespace vanetza
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